Whether the percentage of long loops of Henle or relative medullary thickness (RMT) is a better predictor of an animal’s ability for producing concentrated urine. Given: The percentage of long loops of Henle, RMT, and freezing point depression (FPD) for various mammals is given in the Table 1: Table 1: Percent long loops of Henle, RMT, and FPD for different mammals. Introduction: RMT is defined as the thickness of medulla divided by volume of kidney. It is a measure used to normalize the relative length of loops of Henle as compared to kidney size for differently sized mammals. The medulla has long and short loops of Henle. The long loops of Henle are the ones that extend the whole length of the kidney, while the short ones do not.

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Chapter 51, Problem 3Q

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Whether the percentage of long loops of Henle or relative medullary thickness (RMT) is a better predictor of an animal’s ability for producing concentrated urine.

Given:

The percentage of long loops of Henle, RMT, and freezing point depression (FPD) for various mammals is given in the Table 1:

Table 1: Percent long loops of Henle, RMT, and FPD for different mammals.

Introduction:

RMT is defined as the thickness of medulla divided by volume of kidney. It is a measure used to normalize the relative length of loops of Henle as compared to kidney size for differently sized mammals. The medulla has long and short loops of Henle. The long loops of Henle are the ones that extend the whole length of the kidney, while the short ones do not.

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